.child {
position: relative;
text-align: center;
}
.parent {
position: absolute;
top: 45%;
left: 50%;
transform: translate(-50%, -50%);
max-width: 400px;
}
body {
margin: 0px 0px 0px 0px; font-size: 16px; color: #696969; font-family: Verdana, Arial, Helvetica, sans-serif;
}
.btn_green {
display: block;
margin-top: 0;
maargin-bottom: 0;
padding: 5px 5px;
color: #FFF;
font-family: Verdana, Tahoma, Helvetica, Arial, sans-serif;
text-shadow: 2px 2px 1px #595959;
filter: dropshadow(color=#595959, offx=1, offy=1);
text-decoration: none;
-webkit-border-radius: 7px;
-moz-border-radius: 7px;
border-radius: 7px;
cursor: pointer;
outline: none;
border: solid 1px #3b7200;
background-color: #88c72a;
background: -moz-linear-gradient(top, #88c72a 0%, #709e0e 100%);
background: -webkit-linear-gradient(top, #88c72a 0%, #709e0e 100%);
background: -o-linear-gradient(top, #88c72a 0%, #709e0e 100%);
background: -ms-linear-gradient(top, #88c72a 0% ,#709e0e 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#709e0e', endColorstr='#709e0e',GradientType=0 );
background: linear-gradient(top, #88c72a 0% ,#709e0e 100%);
-webkit-box-shadow: 0px 0px 1px #66FF00, inset 0px 0px 1px #FFFFFF;
-moz-box-shadow: 0px 0px 1px #66FF00, inset 0px 0px 1px #FFFFFF;
box-shadow: 0px 0px 1px #66FF00, inset 0px 0px 1px #FFFFFF;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.btn_green:hover {
background-color: #7fb52f;
background: -moz-linear-gradient(top, #7fb52f 0%, #67910b 100%);
background: -webkit-linear-gradient(top, #7fb52f 0%, #67910b 100%);
background: -o-linear-gradient(top, #7fb52f 0%, #67910b 100%);
background: -ms-linear-gradient(top, #7fb52f 0% ,#67910b 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#67910b', endColorstr='#67910b',GradientType=0 );
background: linear-gradient(top, #7fb52f 0% ,#67910b 100%);
}
.btn_green:active {
background-color: #638f22;
background: -moz-linear-gradient(top, #638f22 0%, #486608 100%);
background: -webkit-linear-gradient(top, #638f22 0%, #486608 100%);
background: -o-linear-gradient(top, #638f22 0%, #486608 100%);
background: -ms-linear-gradient(top, #638f22 0% ,#486608 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#486608', endColorstr='#486608',GradientType=0 );
background: linear-gradient(top, #638f22 0% ,#486608 100%);
}